The publication is the successive edition of national accounts by quarters. It covers quarterly estimates of gross domestic product (GDP) for the years 2017 – 2021.

Quarterly national accounts were compiled according to the methodological and accounting rules of the European System of National and Regional Accounts in the European Union (ESA 2010), introduced by the Regulation No 549/2013 of the European Parliament and of the Council (EU) of 21 May 2013. Quarterly national accounts are presented in accordance with the Polish Classification of Activities – PKD 2007 compiled on the basis of the Statistical Classification of Economic Activities in the European Community – NACE Rev.2. NACE Rev. 2 classification was introduced on the 1st of January of 2008 by the Regulation of the Council of Ministers of 24 December 2007 (Journal of Laws No. 251, item 1885)